MULTIPLEX
Atmospheric Oil Mist Detection System
AM8/JANUARY 2015
EMAIL [email protected] WEBSITE www.oilmist.com 4 East Barnet Road, London, England, EN4 8RW TEL +44 (0)20 7328 3121
Running Procedure
Part3-8
SETTING UP OF SENSORS REQUIRED
The first thing to be displayed is the Software Version.
If the display is showing 12 channels and (for example) only 7 Sensors have been
fitted then the display will show positions 8 to 12 as flashing amber, green and red
lights. Also the display reading will show ‘F1’ fault.
To correct or change the QMI MULTIPLEX Monitor to show only 7 channels and
cancel the other positions showing, the following procedure is carried out:
1. Turn off QMI MULTIPLEX Monitor to switch off the system.
2. For safety, unplug the 3-pin power connector from the Monitor.
3. Using the ‘T’ handled Allen key provided, unscrew the front 4 x M6 screws, one
located at each corner of the Monitor.
4. The front of the Monitor is hinged and the front panel can now be swung open.
The display MP12 PCB v 3.2 can be seen screwed in the lid. There is no need to
remove or unscrew this PCB from the lid.
5. The Binary switch blocks are located on the back of the MP12 PCB v 3.2. There
are a total of 10 Binary switches.
6. To program the switches for a number of Sensors, switch to the positions shown
in the above table.
TO ISOLATE OR RESTORE A CHANNEL
If a Sensor becomes faulty and requires changing ‘F3’ will appear on the display and
the green, amber and red display will flash. If a Sensor requires cleaning ‘F2’ will
appear on the display. If either the Sensor is not changed or the lens not cleaned,
the fault number will obscure all other readings and the oil mist reading will not be
displayed.
As a temporary measure it is possible to isolate the Sensor from the Monitor panel
(’isolate’ in this instance is to remove the Sensor signal from the Monitor via the
software).
To carry out the isolate function, turn security switch key to set mode, place the
magnetic pen on ‘ISOLATE’ circle, then place it over the ‘CHANNEL’ number. Turn the
key back to 'RUN' mode. The channel/Sensor is now isolated and the display will now
be blank. If the pen is placed over the isolated ‘CHANNEL’ number ‘IC’ will appear on
the display.
After the Sensor has been replaced and/or the lens cleaned, reinstate the channel by
turning the key to set mode, place the magnetic pen on ‘ISOLATE’ circle then on to
‘RESET’. Finally place the magnetic pen on to the ‘CHANNEL’ number and turn the
security key to operating mode. This will put the channel and associated Sensor back
on line.
